Thermal Conductivity of Porous Silicon Carbide Derived from Wood Precursors

Abstract

Biomorphic silicon carbide (bioSiC), a novel porous ceramic derived from natural wood precursors, has potential applicability at high temperatures, particularly when rapid temperature changes occur. The thermal conductivity of bioSiC from five different precursors was experimentally determined using flash diffusivity and specific heat measurements at temperatures ranging from room temperature to 1100°C. The results were compared with values obtained from object‐oriented finite‐element analysis (OOF). OOF was also used to model and understand the heat‐flow paths through the complex bioSiC microstructures.

Effect of pyrolyzation temperature on wood-derived carbon and silicon carbide

“…The mechanical and thermal properties of the resulting porous silicon carbide have been well characterized as a function of porosity and orientation. 3,4,[6][7][8] The effects of the pyrolyzation temperature on the resulting silicon carbide, however, have not yet been determined.…”

Catalytic graphitization of three-dimensional wood-derived porous scaffolds

“…[1][2][3] While previous efforts have focused primarily on the development and characterization of biomorphic silicon carbide from wood, [4][5][6][7][8][9][10] biomorphic graphitic scaffolds are of particular interest due to the attractiveness of porous graphite for use in thermal management devices. 11,12 Graphitic scaffolds combine low density, low thermal expansion coefficient, and high thermal conductivity, making them ideal candidates for many thermal management applications.…”

Mechanical properties of wood-derived silicon carbide aluminum-alloy composites as a function of temperature

“…Throughout the processing of wood-derived SiC, the wood microstructure is retained, resulting in a honeycomb-like SiC material. The porosity, spatial distribution, and orientation of the pores affect the properties of the porous SiC, 12,13 but the influence of these factors, which are determined by the wood precursor, on the mechanical properties of the MCCs are not known.…”